exampaperdaoimp.java

该在线考试关系统（B/S结构）主要采用JAVA语言开发涉及主要WEB技术有：Struts+Spring+Hibernate框架

package dao.hibernate;

import java.util.Collection;
import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.HibernateTemplate;

import po.Oexampaper;
import po.Ostudent;
import dao.IExamPaperDao;

public class ExamPaperDaoImp implements IExamPaperDao
{
	
	private SessionFactory sf;
	private HibernateTemplate template;
	
	public SessionFactory getSf()
	{
		return sf;
	}

	public void setSf(SessionFactory sf)
	{
		this.sf = sf;
		//通过session工厂得到hibernate模版
		template = new HibernateTemplate(sf); 
	}
	
	public void addExamPaper(Oexampaper exam)
	{
		exam.setStatus("关闭考试");
		template.save(exam);
		sf.close();
	}

	public void delExamPaper(String id)
	{
		template.delete(this.findExamPaperByid(id));
		sf.close();
	}

	public List findAllExamPaper()
	{
		List list = template.find("from Oexampaper");
		sf.close();
		return list;
	}

	public Oexampaper findExamPaperByid(String id)
	{
		Oexampaper exam = (Oexampaper) template.get(Oexampaper.class, Long.parseLong(id));
		return exam;
	}

	public void updataExamPaper(Oexampaper exam)
	{
		template.saveOrUpdate(exam);	
		sf.close();
	}

	public Collection findByExamkey(int currow, int pagesize, String text)
	{
		Collection TestList = null;
		Query q = null;
		SessionFactory sf = template.getSessionFactory();
		Session s = sf.openSession();
		String hql = "";
		
		//没有条件
		if (null == text)
		{
			hql = "from Oexampaper o order by o.id asc";
			q = s.createQuery(hql);
		}
		
		//1个条件
		if(null != text)
		{
			hql = "from Oexampaper o where o.name like :name";
			q = s.createQuery(hql);
			q.setString("name", "%" + text + "%");
		}

		q.setFirstResult(currow);
	    q.setMaxResults(pagesize);
	    TestList = q.list();
	    s.close();
	    return TestList;
		
	}

	public  void changeStatus(String id)
	{
		Oexampaper exam = this.findExamPaperByid(id);
		
		if("关闭考试".equals(exam.getStatus()))
		{
			exam.setStatus("开放考试");
			template.saveOrUpdate(exam);
			
		}
		else
		{
			exam.setStatus("关闭考试");
			template.saveOrUpdate(exam);
		}
		sf.close();
	}

	public int changePoint(String answer, String answers, int point)
	{
		if(null!=answer && answer.equals(answers))
		{
			return point;
		}
		else
		{
			return 0;
		}
	}

}